// com.learnjava2002.documentパッケージ
package com.learnjava2002.document;

// “書類”を表すクラスDocument
public class Document {
  private static int numOfDoc = 0;
  Document() { numOfDoc++; }
  
  static int getNumOfDoc() { return numOfDoc; }
  void readDataFromFile() {}
  void drawDataOnWindow() {}
}